Couple quotes I like. Andy already mentioned one, but I thought I would mention it again along with the previous days’ quote on our Art of War calendar.
“When your strategy is deep and far-reaching, then what you gain by your calculations is much, so you can win before you even fight. When your strategic thinking is shallow and near-sighted, then what you gain by your calculations is little, so you lose before you do battle.” The Art of War, Chapter 1 On Assessments
“When the army is old, the soldiers are lazy, and the discipline and command are not unified, this is an opponent that has already lost.” The Art of War, Chapter 4 Formation